Why Records Matter More Than You Think

Every year, thousands of self-employed people and landlords reach January with a sinking feeling. Not because their tax bill is enormous, but because they have no idea what they earned, what they spent, or where the receipts went. Digging through bank statements at the last minute is stressful, and it often leads to missed expenses and overpaid tax.

The good news is that keeping decent records is far simpler than most people imagine. You do not need accounting software or a filing cabinet full of shoeboxes. You need a system — any system — that you update little and often. Do that, and your tax return becomes a straightforward hour of typing rather than a fortnight of panic.

HM Revenue & Customs generally expects you to keep records for at least five years after the 31 January filing deadline. That is worth remembering before you shred anything.

Track Your Income as It Arrives

Start with the money coming in, because this is what everything else hangs on. If you are self-employed, your taxable turnover is the total you invoiced or received, depending on your accounting basis, before deducting any expenses.

Keep a running list with the date, the customer or client name, the amount, and the invoice number. Note whether the payment has actually landed in your account, because unpaid invoices still count as income once you have issued them.

• Invoices you have issued, including the date, amount and who owes you
• Payments received, with the date they hit your bank account
• Other income, such as grants, royalties, or interest from business accounts
• Property income if you rent out a flat, room or holiday let, including the rent itself and any deposits you keep

A simple spreadsheet with one row per payment is perfectly acceptable. What matters is that the numbers reconcile with your bank statements at the end of the year.

Record Every Business Expense

Expenses are where most people lose money — not literally, but by forgetting to claim what they are owed. Anything wholly and exclusively for your business is usually allowable, so long as you keep proof.

Log each purchase with the date, the supplier, the amount, and a short description. Group them by type if it helps: office supplies, travel, professional fees, advertising. At the end of the year you will simply total each category and drop the figures into your return.

• Office and admin costs — stationery, postage, printing, software subscriptions
• Phone and internet — claim the business proportion if you use them personally too
• Professional fees — accountancy, legal advice, professional body memberships
• Marketing — website hosting, design work, advertising spend
• Insurance — public liability, professional indemnity, business contents cover
• Equipment — tools, computers and furniture, though some larger items are treated as capital allowances

If you work from home, you can usually claim a flat rate for the business use of your home, or work out a reasonable proportion of your household bills. Note down which method you use so you stay consistent.

Keep the Receipts That Prove It

HMRC does not need a receipt for every single cup of coffee, but you should be able to back up your figures if asked. That means retaining invoices, till receipts, bank statements and card slips.

Paper is fine, but digital is easier. Photograph receipts on your phone as you go, or forward email confirmations into a dedicated folder. Many banks let you export statements as a spreadsheet or PDF, which is ideal for cross-checking.

If a receipt fades or goes missing, write down the details while you remember them — date, supplier, amount, what it was for. A note made at the time is far more convincing than one made three years later.

Log Your Mileage Properly

If you drive for work, mileage is one of the most valuable — and most commonly forgotten — claims. Using the simplified expenses method, you can claim a flat rate per business mile rather than working out the running costs of your vehicle.

Keep a simple log for every business journey:

• Date of the trip
• Destination and the reason for travelling
• Total miles covered on business

Ordinary commuting between home and a permanent workplace does not count, so leave those journeys out. A notebook in the glovebox, or a note on your phone before you set off, does the job. Add the trips up each month and you will have a clean figure ready for your return.

Build a Five-Minute Weekly Habit

The secret to painless record keeping is frequency. Set aside fifteen minutes every Friday, or the first Sunday of the month, to file your receipts, update your income log and reconcile your bank account.

Keep everything in one place — a folder on your computer, a cloud drive, or even a labelled box — so you are never hunting in three different drawers. At the end of the tax year, total your income and expenses, check the figures against your bank statements, and store the whole lot somewhere safe for the next five years.

Do this consistently and filing your return stops being a chore. You will claim everything you are entitled to, avoid nasty surprises, and sleep a great deal better on 31 January.